• Constructors

• Determining NSScroller Size

• Laying out an NSScroller

• Setting the Knob Position

• Calculating Layout

• Drawing the Parts

• Event Handling

• Setting Control Tint

• scrollerWidth

• scrollerWidthForControlSize

• arrowsPosition

• checkSpaceForParts

• controlSize

• controlTint

• drawArrow

• drawKnob

• drawParts

• highlight

• hitPart

• knobProportion

• rectForPart

• setArrowsPosition

• setControlSize

• setControlTint

• setFloatValueAndKnobProportion

• testPart

• trackKnob

• trackScrollButtons

• usableParts